<template>
  <swiper class="wrapper" :options="swiperOption" v-if="showSwiper">
    <swiper-slide v-for="(page,index) in pages" :key="index">
      <div class="icons" v-for="item of page" :key="item.id">
        <div class="icon">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl" :alt="item.alt" />
          </div>
          <p class="icon-desc">{{item.alt}}</p>
        </div>
      </div>
    </swiper-slide>
    <div class="swiper-pagination" slot="pagination"></div>
  </swiper>
</template>
<script>
export default {
  name: 'homeIcons',
  props: { iconList: Array },

  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        loop: true
      }

    }
  },
  computed: {
    pages: function () {
      const pages = []
      this.iconList.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    },
    showSwiper () {
      return this.iconList.length
    }
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl';
@import '~styles/mixins.styl';

.icons >>>.swiper-container {
  // overflow: hidden;
  height: 0;
  padding-bottom: 50%;
}

.wrapper >>> .swiper-pagination-bullet-active {
  background: rgba(0,175,190,.8);
}

.icon {
  margin-top: 0.1rem;
  float: left;
  width: 25%;
  height: 0;
  padding-bottom: 25%;
  position: relative;

  // overflow hidden
  .icon-img {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0.44rem;
    box-sizing: border-box;
    padding: 0.1rem;

    .icon-img-content {
      display: block;
      margin: 0 auto;
      height: 100%;
    }
  }

  .icon-desc {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.1rem;
    height: 0.44rem;
    line-height: 0.44rem;
    text-align: center;
    color: $darkTextColor;
    ellipsis();
  }
}
</style>
